拱圈拓扑优化及结果合理性研究  

Topology optimization and rationality of results for arch rings

作　　者：孙蓓[1] 苏超[1] 

机构地区：[1]河海大学水利水电工程学院,江苏南京210098

出　　处：《河海大学学报（自然科学版）》2009年第5期578-581,共4页Journal of Hohai University(Natural Sciences)

基　　金：国家自然科学基金(50579011)

摘　　要：为验证拱圈拓扑优化的可行性和合理性,根据拱坝水平拱圈的特点,采用拓扑优化均匀化算法对某拱坝不同坝高处的水平拱圈进行结构优化计算,利用滤波法和多重网格法解决了在拱圈拓扑优化过程中出现的数值不稳定问题.对优化得到的下游面带有反弯段的结构进行不同的下游面曲线拟合,应力校核结果表明:拓扑优化得到的拱圈不仅是可行的,并且比传统形状的拱圈更为合理.In order to validate the feasibility and rationality of the topology optimization for arch rings, the topology homogenization algorithm was employed to calculate the structural optimization of horizontal arc rings of an arc dam at different heights according to the characteristics of horizontal arch rings of arch dams. The filtering method and multi-grid method were used to solve the numerical instability phenomena during the topology optimization of arch rings. The downstream face structure with inflection obtained from the topology optimization was fitted by use of different downstream face curves. The stress check results of the arch rings show that the arch rings based on the topology optimization are feasible, furthermore, they are more rational than other traditional arch rings.

关 键 词：拱圈 拓扑优化 均匀化算法 反弯段 数值不稳定现象 

分 类 号：TV642.4[水利工程—水利水电工程]